期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷的合成及性能
1
作者 张丽云 周永红 +1 位作者 胡立红 张猛 《精细化工》 EI CAS CSCD 北大核心 2012年第9期860-865,共6页
以硬脂酸、单乙醇胺、环氧乙烷、葡萄糖为原料制备了不同环氧乙烷(EO)聚合度的硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷类非离子表面活性剂。该糖苷类表面活性剂在烷基和葡萄糖分子之间引入非离子表面活性剂中常见的亲水基团。通过IR和1HNM... 以硬脂酸、单乙醇胺、环氧乙烷、葡萄糖为原料制备了不同环氧乙烷(EO)聚合度的硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷类非离子表面活性剂。该糖苷类表面活性剂在烷基和葡萄糖分子之间引入非离子表面活性剂中常见的亲水基团。通过IR和1HNMR对产物结构进行表征,并测试了该类表面活性剂的最低表面张力(γCMC)为30~38 mN/m,临界胶束质量浓度(CMC)为0.01~0.1 g/L。研究了EO聚合度(n)对产品表面物理化学性能的影响,随着n的增加,CMC、乳化性能、吸湿保湿性能均增加。不同聚合度的产物均有很好的泡沫性能和硬水稳定性。 展开更多
关键词 硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷 乳化性能 泡沫性能 硬水稳定性 吸湿保湿性能 表面活性剂
下载PDF
Aquatic hyphomycetes in the lateritic cave streams of Southwestern India
2
作者 Sharathchandra K Sridhar KR 《Studies in Fungi》 2021年第1期480-487,共8页
For the first time,assemblage and diversity of aquatic hyphomycetes were investigated in four lateritic cave streams of the southwest coast of India.This study includes physicochemical features of cave habitats and st... For the first time,assemblage and diversity of aquatic hyphomycetes were investigated in four lateritic cave streams of the southwest coast of India.This study includes physicochemical features of cave habitats and stream waters.Species richness,diversity and equitability of aquatic hyphomycetes in foam,water,leaf litter and woody litter(bark and cambium)have been investigated.These cave streams yielded up to 21 species of aquatic hyphomycetes,which is comparable to the population in nearby streams.The leaf litter of cave streams consist of highest number of species,while it was the lowest in the foam samples(15 vs.7 spp.).Cave stream water,bark and cambium consist of 14,11 and 9 species,respectively.Simpson’s and Shannon’s diversities were the highest in water samples,while the Pielou’s equitability was highest in foam samples.The species richness as well as the core-group(highly frequent)aquatic hyphomycetes are comparable with nearby streams.Actinospora megalospora,Anguillospora angulata,A.crassa,Condylospora spumigena,Ingoldiella fibulata and Trinacrium subtile were the new records to the coastal region of southwest India. 展开更多
关键词 Bark−cambium−diversity foam−leaf litter−water−woody litter
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部